import java.util.Scanner;

public class Test7 {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.print("请输入一个数:>");
        int n=sc.nextInt();
        int count=0;
        while(n!=0){
            n=n&(n-1);
            count++;
        }
        System.out.println("二进制1的个数是"+count+"个");
    }
}
